Fluid hydrocarbon oil compositions containing block copolymers for
improved viscosity temperature relationship
    12.
    发明授权
    Fluid hydrocarbon oil compositions containing block copolymers for improved viscosity temperature relationship 失效
    包含嵌段共聚物的流体油组合物改善粘度温度关系

    公开(公告)号:US4136048A

    公开(公告)日:1979-01-23

    申请号:US539468

    申请日:1975-01-08

    申请人: Thomas L. Staples

    发明人: Thomas L. Staples

    IPC分类号: C10L1/16 C10M143/10 C10M1/16

    摘要: A fluid having an improved viscosity/temperature relationship results from a blend of that fluid and a block copolymer having an AB configuration wherein the A portion is a polymeric structure that is insoluble in said oil below a characteristic temperature and soluble above that temperature and the B portion is a polymeric structure that is soluble in said fluid over the complete range of temperature for which the liquid composition will be used and wherein the chain length of said B portion is small relative to that of said A portion. Fluid compositions having a relatively constant viscosity over an extended temperature range result when two or more such block polymers are blended with the fluid.